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porting old glut demos

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git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@159 b9cfdab3-6d41-4d17-bbe4-086880011989
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NishiOwO
2025-10-04 14:49:39 +00:00
parent 2e2770f040
commit f0383582b5
4 changed files with 209 additions and 5 deletions
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examples/gltriangle.c Normal file
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/* $Id$ */
#include <Mw/Milsko.h>
#include <Mw/OpenGL.h>
#include <GL/gl.h>
MwWidget window, opengl, button;
int ow, oh;
double deg = 0;
double dir = 1;
void resize(MwWidget handle, void* user_data, void* call_data) {
unsigned int w, h;
(void)user_data;
(void)call_data;
w = MwGetInteger(handle, MwNwidth);
h = MwGetInteger(handle, MwNheight);
MwVaApply(opengl,
MwNwidth, (ow = w - 100),
MwNheight, (oh = h - 150),
NULL);
MwVaApply(button,
MwNy, h - 50 - 50,
MwNwidth, ow,
MwNheight, 50,
NULL);
}
void tick(MwWidget handle, void* user_data, void* call_data) {
(void)handle;
(void)user_data;
(void)call_data;
MwOpenGLMakeCurrent(opengl);
glViewport(0, 0, ow, oh);
glClear(GL_COLOR_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1, 1, -1, 1, -1, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glPushMatrix();
glRotatef(deg, 0, 0, 1);
glBegin(GL_TRIANGLES);
glColor3f(1, 0, 0);
glVertex2f(0, 0.8);
glColor3f(0, 1, 0);
glVertex2f(-0.8, -0.8);
glColor3f(0, 0, 1);
glVertex2f(0.8, -0.8);
glEnd();
glPopMatrix();
MwOpenGLSwapBuffer(opengl);
deg += 120.0 / (1000.0 / MwWaitMS) * dir;
}
void activate(MwWidget handle, void* user_data, void* call_data) {
(void)handle;
(void)user_data;
(void)call_data;
dir = dir == 1 ? -1 : 1;
}
int main() {
window = MwVaCreateWidget(MwWindowClass, "main", NULL, 0, 0, 400, 450,
MwNtitle, "hello world",
NULL);
opengl = MwCreateWidget(MwOpenGLClass, "opengl", window, 50, 50, (ow = 300), (oh = 300));
button = MwVaCreateWidget(MwButtonClass, "button", window, 50, 350, 300, 50,
MwNtext, "Reverse",
NULL);
MwAddUserHandler(window, MwNresizeHandler, resize, NULL);
MwAddUserHandler(window, MwNtickHandler, tick, NULL);
MwAddUserHandler(button, MwNactivateHandler, activate, NULL);
MwLoop(window);
}