Implement rotation of the single object
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parent
03fca66adc
commit
ab95762d50
110
gl_draw.c
110
gl_draw.c
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@ -16,6 +16,8 @@
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "err.h"
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#include "filereader.h"
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#include "types.h"
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#include <GL/glut.h>
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@ -28,7 +30,6 @@
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#include <stdio.h>
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#define filename __FILE__
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#define XY_WIRE_COUNT 10.0f
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#define ROT_FACTOR_PLANET_SUN (360.0 / yearabs)
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@ -47,18 +48,37 @@ HE_obj *obj;
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/*
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* static function declaration
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*/
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static void draw_Sun(void);
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static void draw_obj(uint32_t xrot, uint32_t yrot, uint32_t zrot);
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static void draw_Planet_1(void);
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static void draw_Planet_2(void);
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/**
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* Draws a sun which changes its color randomly.
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* Draws an object.
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*
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* @param myxrot rotation increment around x-axis
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* @param myyrot rotation increment around x-axis
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* @param myzrot rotation increment around x-axis
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*/
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static void draw_Sun(void)
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static void draw_obj(uint32_t myxrot, uint32_t myyrot, uint32_t myzrot)
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{
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static uint32_t xrot = 0,
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yrot = 0,
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zrot = 0;
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xrot += myxrot;
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yrot += myyrot;
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zrot += myzrot;
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glPushMatrix();
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/* rotate according to static members */
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z);
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glRotatef(xrot, 1.0f, 0.0f, 0.0f);
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glRotatef(yrot, 0.0f, 1.0f, 0.0f);
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glRotatef(zrot, 0.0f, 0.0f, 1.0f);
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z_BACK);
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/* pull into middle of universe */
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glTranslatef(-obj->faces->edge->vert->x,
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-obj->faces->edge->vert->y,
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@ -74,7 +94,6 @@ static void draw_Sun(void)
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glVertex3f(tmp_edge->vert->x,
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tmp_edge->vert->y,
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tmp_edge->vert->z);
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} while ((tmp_edge = tmp_edge->next) != obj->faces[i].edge);
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}
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@ -96,7 +115,7 @@ static void draw_Planet_1(void)
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glPushMatrix();
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//Rotate around the sun
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/* Rotate around the sun */
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z);
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glRotatef(90, 1.0f, 0.0f, 0.0f);
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glRotatef((ROT_FACTOR_PLANET_SUN * day), 0.0f, 0.0f, 1.0f);
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@ -106,12 +125,13 @@ static void draw_Planet_1(void)
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glColor3f(1.0f, 0.0f, 0.0f);
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//A rotation (full 360°) once a day is much too fast you woulden'd see a thing
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/* A rotation (full 360°) once a day is much
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* too fast you woulden'd see a thing */
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glRotatef((ROT_FACTOR_PLANET * day) / rot_fac_day, 0.0f, 0.0f, 1.0f);
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glutWireSphere(1.0f, XY_WIRE_COUNT, XY_WIRE_COUNT);
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glRotatef((ROT_FACTOR_PLANET * day) / rot_fac_day, 0.0f, 0.0f, -1.0f);
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//Center axis
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/* Center axis */
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glPushMatrix();
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glLineWidth(3);
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glColor3f(1.0, 1.0, 1.0);
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@ -121,33 +141,33 @@ static void draw_Planet_1(void)
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glEnd();
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glPopMatrix();
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//circle1
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/* circle1 */
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glPushMatrix();
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glColor3f(0.8f, 0.0f, 0.2f);
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//glRotatef(90, 0.0f, 1.0f, 0.0f); //"senkrecht zur Planetenachse"
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/* glRotatef(90, 0.0f, 1.0f, 0.0f); [> "senkrecht zur Planetenachse" <] */
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gluDisk(quadric, 1.2f, 1.3f, 32, 1);
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glPopMatrix();
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//circle2
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/* circle2 */
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glPushMatrix();
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glColor3f(0.0f, 1.0f, 0.0f);
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//glRotatef(90, 0.0f, 1.0f, 0.0f); //"senkrecht zur Planetenachse"
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/* glRotatef(90, 0.0f, 1.0f, 0.0f); [> "senkrecht zur Planetenachse" <] */
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gluDisk(quadric, 1.4f, 1.7f, 32, 1);
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glPopMatrix();
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//Moon1
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/* Moon1 */
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glPushMatrix();
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glColor3f(0.0f, 0.0f, 1.0f);
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//glRotatef((ROT_FACTOR_MOON * day), 1.0f, 0.0f, 0.0f); //"senkrecht zur Planetenachse"
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/* glRotatef((ROT_FACTOR_MOON * day), 1.0f, 0.0f, 0.0f); [> "senkrecht zur Planetenachse" <] */
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glRotatef((ROT_FACTOR_MOON * day), 0.0f, 0.0f, 1.0f);
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glTranslatef(0.0f, 2.0f, 0.0f);
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glutWireSphere(0.1f, XY_WIRE_COUNT, XY_WIRE_COUNT);
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glPopMatrix();
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//Moon2
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/* Moon2 */
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glPushMatrix();
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glColor3f(0.0f, 1.0f, 1.0f);
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//glRotatef((ROT_FACTOR_MOON * day), 1.0f, 0.0f, 0.0f); //"senkrecht zur Planetenachse"
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/* glRotatef((ROT_FACTOR_MOON * day), 1.0f, 0.0f, 0.0f); [> "senkrecht zur Planetenachse" <] */
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glRotatef((ROT_FACTOR_MOON * day), 0.0f, 0.0f, 1.0f);
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glTranslatef(0.0f, -2.0f, 0.0f);
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glutWireSphere(0.1f, XY_WIRE_COUNT, XY_WIRE_COUNT);
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@ -167,7 +187,7 @@ static void draw_Planet_2(void)
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glPushMatrix();
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const float moon_pos_fac = 2.5;
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//Rotate around the sun
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/* Rotate around the sun */
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z);
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glRotatef(90, 1.0f, 0.0f, 0.0f);
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glRotatef((ROT_FACTOR_PLANET_SUN * day), 0.0f, 0.0f, 1.0f);
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@ -175,13 +195,14 @@ static void draw_Planet_2(void)
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glColor3f(0.0f, 0.0f, 1.0f);
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//A rotation (full 360°) once a day is much too fast you woulden'd see a thing
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/* A rotation (full 360°) once a day is much
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* too fast you woulden'd see a thing */
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const int rot_fac_day = 15;
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glRotatef((ROT_FACTOR_PLANET * day) / rot_fac_day, 0.0f, 0.0f, 1.0f);
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glutWireSphere(1.3f, XY_WIRE_COUNT, XY_WIRE_COUNT);
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glRotatef((ROT_FACTOR_PLANET * day) / rot_fac_day, 0.0f, 0.0f, -1.0f);
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//Moon3
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/* Moon3 */
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glPushMatrix();
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glColor3f(1.0f, 1.0f, 1.0f);
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glRotatef((ROT_FACTOR_MOON * day), 0.0f, 0.0f, 1.0f);
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@ -190,7 +211,7 @@ static void draw_Planet_2(void)
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glutWireSphere(0.1f, XY_WIRE_COUNT, XY_WIRE_COUNT);
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glPopMatrix();
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//Moon4
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/* Moon4 */
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glPushMatrix();
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glColor3f(1.0f, 0.0f, 1.0f);
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glRotatef((ROT_FACTOR_MOON * day), 0.0f, 0.0f, 1.0f);
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@ -199,7 +220,7 @@ static void draw_Planet_2(void)
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glutWireSphere(0.1f, XY_WIRE_COUNT, XY_WIRE_COUNT);
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glPopMatrix();
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//Moon5
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/* Moon5 */
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glPushMatrix();
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glColor3f(1.0f, 0.0f, 0.0f);
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glRotatef((ROT_FACTOR_MOON * day), 0.0f, 0.0f, 1.0f);
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@ -219,7 +240,7 @@ void display(void)
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glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
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glMatrixMode(GL_MODELVIEW);
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draw_Sun();
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draw_obj(0, 0, 0);
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draw_Planet_1();
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draw_Planet_2();
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@ -245,9 +266,11 @@ void display(void)
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/**
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* Sets the initial values to start the program.
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*/
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void init(HE_obj *myobj)
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void init(char const * const filename)
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{
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obj = myobj;
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obj = read_obj_file(filename);
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if (!obj)
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ABORT("Failed to read object file \"%s\"!", filename);
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day = 0;
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year = 0;
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glClearColor(0.0, 0.0, 0.0, 0.0);
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@ -303,12 +326,9 @@ void animate()
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* press T to decrease the day
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* press j to increase the year
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* press J to decrease the year
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* press x to rotate the whole scene in x direction
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* press X to rotate the whole scene in -x direction
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* press y to rotate the whole scene in y direction
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* press Y to rotate the whole scene in -y direction
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* press c to rotate the whole scene in z direction
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* press C to rotate the whole scene in -z direction
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* press x to rotate the middle object in x direction
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* press y to rotate the middle object in y direction
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* press c to rotate the middle object in z direction
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* press w to translate the whole scene in y direction
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* press s to translate the whole scene in -y direction
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* press a to translate the whole scene in -x direction
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@ -340,39 +360,15 @@ void keyboard(unsigned char key, int x, int y)
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glutPostRedisplay();
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break;
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case 'x':
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z);
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glRotatef(1, 1.0f, 0.0f, 0.0f);
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z_BACK);
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draw_obj(1, 0, 0);
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glutPostRedisplay();
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break;
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case 'y':
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z);
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glRotatef(1, 0.0f, 1.0f, 0.0f);
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z_BACK);
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draw_obj(0, 1, 0);
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glutPostRedisplay();
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break;
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case 'c':
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z);
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glRotatef(1, 0.0f, 0.0f, 1.0f);
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z_BACK);
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glutPostRedisplay();
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break;
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case 'X':
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z);
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glRotatef(1, -1.0f, 0.0f, 0.0f);
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z_BACK);
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glutPostRedisplay();
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break;
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case 'Y':
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z);
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glRotatef(1, 0.0f, -1.0f, 0.0f);
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z_BACK);
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glutPostRedisplay();
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break;
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case 'C':
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z);
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glRotatef(1, 0.0f, 0.0f, -1.0f);
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glTranslatef(0.0f, 0.0f, SYSTEM_POS_Z_BACK);
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draw_obj(0, 0, 1);
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glutPostRedisplay();
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break;
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case 'w':
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@ -27,7 +27,7 @@
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#include <GL/glu.h>
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void init(HE_obj *myobj);
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void init(char const * const filename);
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void display(void);
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void reshape(GLsizei w, GLsizei h);
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void animate();
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13
main.c
13
main.c
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@ -17,7 +17,6 @@
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*/
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#include "gl_draw.h"
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#include "filereader.h"
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#include "print.h"
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#include "types.h"
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@ -37,21 +36,15 @@ char const * const helptext = "Usage: drow-engine <file.obj>\n";
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int main(int argc, char *argv[])
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{
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HE_obj *obj = NULL;
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int windowX;
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int windowY;
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int screenX;
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int screenY;
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float factor = 0.80; // percent of screen
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if (argc > 1) {
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obj = read_obj_file(argv[1]);
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print_vertices(obj);
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print_edges(obj);
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print_faces(obj);
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} else {
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if (argc == 1) {
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printf("%s", helptext);
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return 1;
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}
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glutInit(&argc, argv);
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@ -65,7 +58,7 @@ int main(int argc, char *argv[])
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glutInitWindowSize(windowX, windowY);
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glutCreateWindow(filename);
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init(obj);
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init(argv[1]);
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glutKeyboardFunc(keyboard);
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glutReshapeFunc(reshape);
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